[Adv.] TDC, LLC

As we have mentioned before, TDC is the global leader in production and distribution of sodium hydrosulfide (NaHS) and is very familiar to pulp and paper mills worldwide. TDC's NaHS and NaOH products are building blocks you can not do without. I suggest you contact them today.

TDC is adding new production capabilities and service terminals. Want to know more? Visit TDC's website (click on "More" below). Tell them I sent you, please.

Last week's riddle asked: "4 hikers (Adam, Barbara, Catherine, and Dan) need to cross a narrow bridge over a roaring river with the aid of two poles. Either 1 person (with both poles) or 2 people (with one pole each) can cross the bridge at a time. It takes Adam 10 minutes to cross the bridge, Barbara 5 minutes, Catherine 2 minutes, and Dan 1 minute. What is the minimum time it takes to get all four hikers to the other side of the bridge? (No pole-throwing, space ships, or other heroic assumptions allowed.)"

This week's riddle: Name two men (both quite famous) who were born on the same day and year an ocean apart. One was the father of something grand; the other made his mark with "original" scientific ideas.